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Font size in CSS - % or em?
... device pixel ratio larger than 1. For example the iPhone 4 has a physical screen width of 640px, but appears as 320 "CSS" pixels (DPR=2). So the website does not appear smaller!
– Benjamin
Feb 28 '18 at 13:30
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Why is the Android emulator so slow? How can we speed up the Android emulator? [closed]
...utton, then click Show Advanced Setting. Then enable Quick Boot like below screenshot.
Android Development Tools (ADT) 9.0.0 (or later) has a feature that allows you to save state of the AVD (emulator), and you can start your emulator instantly. You have to enable this feature while creating a ne...
What's the difference between the various methods to get a Context?
...could possibly be destroyed many times as the activity is destroyed during screen orientation changes and such.
I couldn't find really anything about when to use getBaseContext() other than a post from Dianne Hackborn, one of the Google engineers working on the Android SDK:
Don't use getBaseCon...
9个常用iptables配置实例 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...es -F
(or iptables --flush)
2.设置chain策略
对于filter table，默认的chain策略为ACCEPT，我们可以通过以下命令修改chain的策略：
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -P OUTPUT DROP
以上命令配置将接收、转发和发出包均丢弃，...
How can I add a PHP page to WordPress?
...d.
Then create a new page in your WordPress blog, and in the page editing screen you'll see a Template dropdown in the Attributes widget to the right. Select your new template and publish the page.
Your new page will use the PHP code defined in templatename.php
Source: Creating Custom Page Templa...
jquery's append not working with svg element?
... his answer, "it does seem to add them in the DOM explorer, but not on the screen" and the reason for this is different namespaces for html and svg.
The easiest workaround is to "refresh" whole svg. After appending circle (or other elements), use this:
$("body").html($("body").html());
This does...
Why does PEP-8 specify a maximum line length of 79 characters? [closed]
... it is. Obviously less wrapping = more readability so long as you have the screen space, which in 2015, you do. Wrapping impacts readability. Readability impacts maintainability. Maintainability impacts quality. And quality is impacted if you're wrapping at 80 chars. Full stop.
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How to change position of Toast in Android?
When I use Toast to display some popup text on the screen, it displays the text a little bit above the bottom of the screen, which is the default position.
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Get notified when UITableView has finished asking for data?
... POC.
https://github.com/ipraba/TableReloadingNotifier
I am attaching the screenshot of my test here.
Tested Environment: iOS9 iPhone6 simulator from Xcode7
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